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Full text of "The Morphology And Evolution Of The Apes And Man"

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THE  UROGEXITAL ORGANS             ii*
they persist. In the Chimpanzee ^fig. 49* the conditions are intermediate between these extremes. The rnocs veneris (M.Y.'» is slight and has a few sparse hairs, and the labia majora (L.M.? are represented by flight elevations of the skin over thickenings of the subcutaneous tissue. The labia minora <..L.ML) are larye and folded. and divide as in Man into a frenulum ai:d prepnliuir:, which surround the large clitoris CL). A foarchette exist?, but there is no hvmen. In the absence of the
*                                                                b
latter the Chimpanzee resemble? all Apes and differs from Man. Gratiolet ,330 points out that the g.a.Ms of Bartholin are deep down between the rectum and vagina. In the Gorilla the labia majora never quite vanish, according to Deniker (44), but there is no rnons veneris.
The perineum is short, and a line connecting the anterior parts of the ischial tuberosities passes in front of the vulva, whereas it lies between the vulva and anus in Man. Copulation occurs in the position adopted by quadrupeds.
Menstruation,—Our knowledge of menstruation in the Apes is contained almost entirely in the works of Pocock (223), Bolau (232), Ehlers 144U), Sperino and Keith (100). Winwoode Eeade (283', Garner and Mohrike (363) merely mention that there is a sexual season in the Gorilla and Chimpanzee.
As regards the discharge in the Hainan Gibbon, Pocock says it is sanguineous, stains the floor of the cage, and is about the same in quantity relatively to the size of the animals as in the historic Chimpanzee '* Sally." The pudendal organs are always conspicuous by reason of their turgescence, and no very conspicuous change in